What is aluminum lake?

Aluminum lake is a type of color additive derived from aluminum hydroxide. It is commonly used in food, pharmaceutical, and cosmetic industries to give products a vibrant color. Aluminum lake pigments are typically insoluble in water and are used in products that require a long shelf life. Lake pigments are produced by mixing a water-soluble dye with a water-insoluble substrate, such as aluminium hydroxide, to create a water-insoluble pigment. Some common names for aluminum lake pigments include FD&C Red No. 40 Aluminum Lake, D&C Red No. 7 Calcium Lake, and D&C Yellow No. 10 Aluminum Lake. Although they are generally considered safe when used in appropriate amounts, some studies have linked the use of aluminum lake pigments to potential health concerns, such as allergies and neurotoxicity.